[TheForge] oxy/acet welding 1 1/2" square

Fri Jan 25 10:13:12 2002

Thanks Peter.  The next time I want empty my 74 cu ft acetylene tank (after
its refilled), I will try it again per your advice.  I also believe I need
the right size tip next time.
RW
----- Original Message -----
From: Peter Fels and Phoebe Palmer <[email protected]>
To: <[email protected]>
Sent: Thursday, January 24, 2002 10:55 PM
Subject: Re: [TheForge] welding 1 1/2" square


> RW: Sure...lots of little stringer beads.
> That is a pretty big bead to be practical for oxy acet but it can be done,
> economics be damned.
> First, V out the weld all the way around so you can get good penetration.
> Next enclose the pieces to be welded in fire-bricks below and on both
> sides. That will contain the heat to a great degree. Sometimes , if you
> have almost enough heat to wet the surfaces of the base metal, but not
> quite enough, Heat as hot as you can get it  and  turn up the acet so a
> feather of unburned  fuel shows  around the inner cone of the flame. This
> will introduce some extra carbon to the surface of the metal and lower
it's
> melting temperature enough to look wet and  thus get the weld to stick.
>
>
> At 05:31 AM 1/24/02, you wrote:
> >Is it possible to butt weld 1 1/2" solid mild steel with a 230 amp max.,
AC
> >220v welder?
> >It does not need to be a "structural weld", just to hold a fireplace
grate
> >frame together.
> >I tried it with a #7 oxy/acet tip which is for 1 1/4" max and it is not
much
> >better than if I had used chewing gum.
> >RW
> >
> >
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